Open AccessEvolution of light‐current characteristic shape in high‐power semiconductor quantum well lasers
Author(s) -
Sokolova Z.N.,
Pikhtin N.A.,
Asryan L.V.
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2019.0225
Subject(s) - laser , semiconductor laser theory , semiconductor , quantum well , current (fluid) , optoelectronics , quantum dot laser , semiconductor optical gain , absorption (acoustics) , optical power , electron , materials science , range (aeronautics) , optics , power (physics) , physics , quantum mechanics , thermodynamics , composite material
The light‐current characteristic (LCC) of semiconductor quantum well lasers is theoretically studied. It is discussed here that, due to internal optical absorption loss, which depends on the electron and hole densities in the optical confinement layer, (i) roll‐over of the LCC occurs with increasing injection current, and, (ii) depending on the parameters of laser structures, the LCC can have two branches, i.e. the optical emission at two different output powers will be possible within a certain range of injection currents.